Puppies Online Puppy Mill Mount Vernon Ohio

I purchased our Morkie (maltese and yorkie) from Puppies Online in Mount Vernon, OH in April 2016. I was suspicious when I asked to see where the puppies were kept I was denied access. I pursued it a bit and then gave up when the staff member told me she would get in trouble if she took me back due to a violation of their liability policy. The puppy they brought out for us was very cute and sweet. We bought him but from the things I have learned, it sounds as though Puppies Online maybe a puppy mill. Our dog was very hard to train and shows signs of being bred in a puppy mill. The house where I sent to see the pup was modest but clean. They had a family pic up on their wall which makes you believe all is legit. The dog trainer we went to said that from various things I told her, it sounds like a puppy mill and puppy mills are very good at deceiving and misleading people. I would like an investigation to look into Puppies Online practices and would like to know how to get them shut down if in fact they are running a puppy mill and mistreating these animals.